Characteristics | N (%) | Smoking status | Chi-square | P | |
---|---|---|---|---|---|
Nonsmokers (N = 17,993) | Current smokers (N = 1549) | ||||
Sex | 805.2 | <0.001 | |||
Boys | 9723 (49.75) | 8416 (86.56) | 1307 (13.44) | ||
Girls | 9819 (50.25) | 9577 (97.54) | 242 (2.46) | ||
Age range (years) | 304.7* | <0.001* | |||
≤ 13 | 3904 (19.98) | 3797 (97.26) | 107 (2.74) | ||
14- | 3038 (15.54) | 2894 (95.26) | 144 (4.74) | ||
15- | 3302 (16.90) | 3026 (91.64) | 276 (8.36) | ||
≥ 16 | 9298 (47.58) | 8276 (89.01) | 1022 (10.99) | ||
Location of school | 26.3 | <0.001 | |||
Urban | 7346 (37.59) | 6858 (93.36) | 488 (6.64) | ||
Rural | 12,196 (62.41) | 11,135 (91.30) | 1061 (8.70) | ||
School level | 659.3 | <0.001 | |||
Middle school | 9617 (49.21) | 9175 (95.40) | 442 (4.60) | ||
Academic high school | 5495 (28.12) | 5140 (93.54) | 355 (6.46) | ||
Vocational high school | 4430 (22.67) | 3678 (83.02) | 752 (16.98) |